Search under way for missing helicopter in Calif.

DELANO, Calif. 
A search is under way for a helicopter that went missing in Central California.

Federal Aviation Administration spokesman Ian Gregor says the helicopter was returning to Delano Airport in Kern County when it disappeared around 6:15 a.m. Wednesday. It was among three helicopters that were supposed to be conducting frost control on a local field. The two other helicopters returned to their base.

Gregor says one of the pilots who came back was unable to contact the missing pilot by radio.